Schapt



Feb. 3, 1931. E. BREITLING 1,790,790

ZERO PRINTING DEVICE Filed Sept. 1'7, 1929 7 Sheets-Sheet 1 Feb. 3, 1931.

E. BREITLING ZERO PRINTING DEVICE Filed Sept. 17, 1929 7 sheets-sheet 2 Feb. 3, 1931. E. BRElTLlNG 1,790,790

ZERO PRINTING DEVICE Filed sept. 1v, 1929 'r sheets-sheet 3 liga;

Feb. 3, 1931.l E. BREiTLlNG 1,790,790

ZERO PRINTING DEVICE Filed Sept. 17, 1929 7 Sheets-Sheet 4 E. BREITLING 1,790,790

ZERO PRINTING DEVICE Filed sept. 17. 1929 rr sheets-sheet 6 Feb. 3, 1931.

xxi-

IIE

W/.Cw/

Feb. 3, 1931. y E. BREITLING 1,790,790

ZERO PRINTING DEVICE Filed Sept. 17, 1929 7 Sheets-Sheet 7 Sa y- ******O.50 352Go Sa V m*****3e0,00 35261 Sa T-m******0,00 35262 sa- S-m *3mi-3535,76 3.5263 S R m***1-*45.72 35284 Sa-p-maf-mzwwfo 35255 S@ N m *m3455110 35265 Patented Feb. 3, 1931 UNITED STATES PATENT CFI-'ICE OF ESSEN, GERMANY, ASSIGNOR T FRIED. XRUPP AKTIENGESELL- SCHAI'T, 0l' ESSEN -ON -THE-RUHR, GERMANY murmure DEVICE Application tiledl September 17, 1929Serial lo. 393,183, and in Germany September 28, i928.

This invention relates to zero printing devices for the printin mechanism of calf cula-ting machines, of t e type in which the differential drive, to which the type carrier,

fied form of the typeA carriers.

the amount setting member and the shifting device for `adjusting to the clear or zero positions are connected".

The drawing shows several embodiments of the invention.

Fig. 1 is a side view of one form of the device,

Fig. 2 is a section on the line II.-II `of Fig. 1,viewed from' the left,

Fig. 3 is a view from the left of a. portion of Fig. 1,

Fig. 4r is a section on the line IV-IV of Fig. 1,

Fig. 5 is a :fragmentaryv view of the type carriers, showing the arrangement of the type on the various type carriers.

Figs. 6 to 8 are side views of the three forms of type carriers,

Fig. 9 is a side view of a modified form of the invention, y

Fig. 10 is a section on the line X-X of Fior. 9, viewedV from/the left,

Fig. 11 is a section on the line XI-XI of Fig. 9 .y

Fig., 12 is a fragmentary view of the type carriers of this modification, showing the arrangement of thetype,

Figs. 13, 14 and 15 arethree fragmentary 'views of record strips showing 'various forms of records, and Fig. 16 is a'fragmentary view ofwa mod1- Type wheels 1 (Figs. l and 2) of the nine places of the printing mechanism, hereinafter designated a. to, i, are connected to toothed wheels 11l 'by-toothed wheels 2, telescoped tubes" 3, toothed wheels 4, pinions,

--with stationary rod 41.

rack bars 6, and toothed wheels 7 and 8, fixed. fupon separate shafts 9 journalled in the printing mechanism housing. Toothed wheels 1.1 `are joined by connecting hubs to worm wheels 12, which mesh with amount setting. members 13 mounted upon the main shaft 10 of the setting mechanism of the ma' chine. In every operation of the machine the setting members 13 are shifted directly from the amount set by the previous operation to that set by lthe new operation.

sov

Through the described connections the type wheels 1 are also positivelyadjusted.

In the form of the invention shown in Figs.

'1 to 8, the pinions 5.5" and Ii, that is, those of the three lowest places and the highest place, are journalled upon stationary shafts .14 and l5, while the pinions 5d'-5, that 1s, the. pinions 5 of the fou'rth to eighth places from the right, are constructed as dif erential wheels. For this .purpose the wheels 5*-5h are each mounted upon a pin 16 (Figs. 1 and 2) between side plates 17 of a support or slide 18. -These slides are formed of the side plates 17 'the pin 16 rigidly connecting; them together, and two other pins 19 and 21. At their right ends the si e plates 17 are providedl with slots 22 receiving a stationary guide `piece 23, while at their left ends they are pivoted by pins 21 to, bell crank levers 25 pivotally mountedupon a stationary pin 24. The free ends of bell cra-nk levers v25 are provided with two recesses 26and 27, with which a common locking beam 28 (Figs. 1 and 4) cooperates. The locking beam 28 is borne by a two-armed lever 31 journalled on a shaft 29 and having at the end of its lower arm a roller 32 running in a cam groove 33 (Fig. 1) of a disk 35 secured upon the drive shaft 34. The cam groove 33 is shaped to v produce two swinging motions of lever 31 for each rotation of shaft 34.

Each slide 181'v--18h (Fig. 1) has a coupling or shifting member 36 in the form of a link pivoted to the pin 19. Each coupling 36 is under the lnfluence o f a tension spring 37 connected to its right end and has atgits left end an angular slot 38 39 cooperating ach of the cou- 3). The two arms-43 are rigidly fixed to a shaft 45 to which there is also 4fixed a downwardly directed armv 46, having at its end a. roller 47 running in a cam groove 48 in the plings has an extension provided with an open slot 42 cooperating with a` swinging rod 44 mounted on two arms 43 (Figs. 1 and cam disk 35. Each coupling 36 is arranged beneath the rack bar 6 of the corresponding order. When the latter is in its initial position, an inclined surface 49 on the upper side of coupling 36 is held by spring 37 in a correspondingly formed recess 51 of the rack bar 6, whereby the vertical part 39 of the angular slot receives the rod 34 and locks the coupling 36, together with the slide 18 and the differential pinion 5, against displacement. -When the correspondmg rack bar 6 is-moved out of its initial positiop, by the setting of an amount, the coupling 3`6'is pressed down against the action of its spring 37, so that the portion of the slot 39 leaves the rod 41, while the open slot 42 movesy over the swinging rod 44. Also in this position of the .coupling 36 the slide'18 is locked against un- -desired motion.

As can be seen from Fig. 4, the coupling 36 has on its upper edge a bent-over lug 52, which extends over the coupling 36", and on its under edge the coupling 36e has a bentout lug 53 extending under 'the coupling 36. In the same manner the couplino' 36E is connected with its neighboring coupl 36h. It can be seen that whenever one of the couplings BGL-36 is depressed by movement of the corresponding rack bar 6 out of its zero position, all of the couplings 36 lying to the right of the depressed coupling are carried down by the over and under lapping lugs and come likewise into engagement with the swinging rod 44 and out of engagement with the locking rod 41.

The highest place, which, like the three lowest places lacks a slide 18, has nevertheless a lever 36* similar to couplings 36. This lever is mounted-on a stationary stud 55 and has a bent-over lug 52 extending over the neighboring coupling 36h. The lever 36 has no projection at its left end with a slot 42 like the couplings 36 (Fig. 1) it serves simply to carry down the couplings 3611--36s into Evorkiing position, upon movement of the rack The type wheels are divided into twentysix parts and have a double series of' type, for printing at two places. Only one platen is shown in the drawing and this is mounted upon arms 61 secured to a rock shaft 62.

A downwardly extending arm 63, likewise secured to shaft'62, has at its end a roller 64 engaging in cam groove 65 of a cam disk 66 ings 36t and ymembers 13 turn for the said amount.

Type wheels 1-1 are shown in Fig. 6; they have the ordinary series of type 0 to 9 and are only for printing these characters, for the printing mechanlsm is advantageously arranged for printing values in dollars and cents.

.Type wheels 1"---1h (Fig. 7 of the next five places to the lefthave, besldesthe series of numbers 0 to 9, a star'sign, which comes next tol zero. the ones which are adjusted for printing zero or clear. When they are adjusted for printing clear, the star sign is printed. Instead of the star sign. any fother sign may obviously be used, for example, a dash, cross, or the like, or, as is usually the case, there may These five type wheels are be no character whatever printed for theclear l position.

The type wheel 1 (Fig. 8) of the highest place has besides the series of numbers 1 to 9 a star sign, which follows after the number l. The zero is here replaced by the star, because a zero is never printed as the initial figure of an amount. It can be seen from Fig. 5, which shows the relative arrangement of the type to the printing line 57, that when all slides 18 are in their initial positions, the type Wheels 11-1c and 1i, which do not take part in the zero and clear adjustment. and are normally simply adjusted by the rack bars 6, are displaced one unit with the type wheels ld-lh, which are adjusted for clear f and zero and are shown in 'the clear position.

If one of the middle type Wheels ismoved out ofthe clear position in accordance with a digit of, an amount, itshows at tirst a-number one unit less than ythis digit; it must therefore be turned one unit further, as must all the type wheels 1-1d to the right oi' il, if these have not been adjusted pto. any amount, in order to bring thezeros of the latter t pe wheels to the printing line, instead o the stars. This occurs in a manner which will beunderstood from the following example.

Assume the printing mechanism to be in the position shown in Fig. .1 and that the amount 60023.04 is to be set and printed. At the beginning ofthe operation, with the locking beam 28 in the recess 26, the settirg n this operation onl thetype wheels 1g, 1d, 1, and lk are adjusted, namely, for the amounts 6, 2, 3 and vr4, so that the type wheel lg presents to the printing line the type 5, the type wheel 1d the type 1, and the type wheels 1 and 1 the types 3 and 4. The type wheels 1, 1h, 1f, 1 remain withthe star sign presented to the printing line and the type wheel 1h with the zero tothe printing line.

It is now necessary to move the type'wheels 11gv one unit further, in order to bringy to the printing line, instead of the types 5 and 1, the types 6 and 2, andinstead Aof the sta-s moogoog of type wheels l" and 1f, the zeros` "By the adjustment of the amounts upon the type wheels 1g and 1d, the rack bars 6g and 6d (Figs. 1 and 2) were moved out of their initial positions, so that the couplings 36g and 36dv were displaced by the cooperation of the inclined surfaces 49 and 51 and thereby brought out of engagement with the locking ar 41 and into engagement with the swinging bar 44. uSince the coupling 36g has a lateral lug 52 projecting over the neighboring coupling 36f (Fig. 4) and a lug 53 of coupling 36e projects under coupling 36f, the couplings 36f and 36e are displaced, although their rack bars 6 remain in starting position. Now the bell crank lever 25 is released by the lockingabeam 28 and immediatelytlie swinging rod 44 is moved to the right by cam 35. At this time the slides i8 which arel coupled with rod 44, namely, the slides 18h-18d, are carried to the right, whereby exactalinement of the type wheels 1. Now

the type wheels Ystand in the positions correspondmg to the amount set; the two lhighest pla-ces having no amounts present the star signs to the printing line.

After the printing is accomplished, the bell crank levers 25 are released by the locking beam 28 and thereupon the rod 44 swings back to the left.A .At the end of the operation the locking beam 28 v4is again thrown intothe bell crank levers 25, now in the recesses 26 in all orders, so that until the next operation of the machine all the typewheels 11d present to t-he printing line either a star or number which is one unit less than the corresponding digit of the/amount set in the precedingl operation.

rlhe engagement of the selected couplings 36 withthe rod 44 remains as before; it

changes, however,I upon setting a new amount, 1n dependence upon the adjustment of the rack bars 6, in such a mannerthat the couplings 36 whose rack bars 6 are moved back to the initial position, that is, in those places which contain a zero in the newly set amount, are released by the inclined surfaces 51 and, go back into their initial positions under the action of springs 37, unless 'they are held down in working'position by the Aover-lappingor under-lapping lugs 52, 53 of a higher place. All slides 18 included in the new amount are coupled with the rod 44, so thatthe supplemental rotation of the corresponding type wheelsl 1 for one unit takes place in the manner described.

The locking beam 28 is thrown'against the bell crank levers 25 twice during each operation, the first time, after the coupled slides 18 have been movedto the left by swinging rod 44, this for the purpose of alining the type wheels, the second time, after the completion of the printing and the return' of the slides 18 to their let`t-endpositions After it is thrown in the second time, the locking beam 28 remains in while the machine is idle and during the setting of the new amount by setting members 13, in order to ensure an exact adjustment of the couplings 36 with respect to rods 44 and4 41 during the new amount setting. In order to give the couplings 36 an easy action, the slots 42, 39 are slightly Wider than the diameterof rods 41, 44 and the alinement of couplings 36 is such that the slots can'move over the rods with play on bot-h sides. e

Fig. 13 shows a control strip printed by the arrangement described. The zeros ot' the three places at 'the extreme right are printed, even when no amount whatever has been set. The control strip then shows stars in the six places to the left and zeros in the three places vto the right. It can easily happen in this case, that a zero is read as a 6 or a 9, so that it is overlooked that this item was for a zero value. In order to exclude this possibility, the arrangements according to Figs. `9 to 12 have the three places to the right so constructed that they printa clear sign, when- ,ever none of the type carriers of these three places, or those to the left have been adjusted to an amount. On the other hand they print zeros when any one of the three type carriers tothe `right has been adjusted to an amount, even though no amount has been set in any of the places to the left. .The type of record made by this arrangement is shown in F ig.

14. ln this way the clear sign, in this case a star, appears in all places, upon printing a complete zero item and the zero items stand out clearly on the record of` the contro1 strip or printed check.

Instead of the arrangement according to Figs. 1 to 8, in which the pinions of the three places to the right, 5-5, are mounted 0n a stationary pin, in the arrangement according to Figs. 9 to'12, the pinions 55c are journalled upon a in 16-c extending across l' two side plates 17 Fig. 10) of aframe 18H,

similar in side view to the slides 18d-18". Upon the pin 19 (Fig. 9) of this frame is pivoted a coupling 36H, which cooperates with an inclined surfacevl of. the rack bar 6" of the second place from the right in the Vsame way as in the fourth to eighth places rack bars 6", 6 of the first and third places i type wheels, the clear sign, in the form of a star, appears in all places, see Fig. 14, lines 2 and 3.- Ifvan amount is set on one of the ltype wheels 1d-'1h, all places to the left print a star, all places to the right print a zero. For example, if the type wheel' 1r is moved live units, the type 4 is first presented to the printing line. However, by the movement of rack bar 6f, the coupling 36f is depressed, and with it, by meansvof thelugs 58, 52, the couplings 36e and 36d, and all come into engagement with the rod 44. At the same time, by means of the lug 53 ot coupling 36E-engaging undercoupling 86d, the former coupling is also brought into engagement with the rod 44, so that the frame 18ac bearingthe three pinions 51--5c is also coupled to the rod 44. When this rod receives its driving motion to the right, the type wheels 11--1t are displaced one unit by the couplings 36 which have been thrown in, so that the type wheel 1 prints a 5, the type wheels 1a.- e zeros and the type wheels 1g,-1, which did not take part in the supplementalmotion, print stars (***5,000.00) On the other hand if an amount is adjusted only on one of the three type wheels to the right, 1a`-1c, then, regardless of which of these three places receives this adjustment,

the coupling 36a-c is connected with rod 44,

through the action of the corresponding inclined surface 51 upon one of the projections- 493-49. The record then shows stars in the places 1"-1i and in the three places to the right zeros or the number set. For instance, if the number 5 was set in the second or third place from the right, the record shown in the first or sixth lines of Fig. l14 is made. If the' completezero item frequently'occurs, for example, in drawing the individual totals from a plurality of .used and unused counting is necessary to make these items stand -out more'clearly from the record than they do in Fig. 14, the type carriers of the threel places to the right are formed in the manner shown in Fig. 16. In this case the stars are replaced by the letters c, le and ar, so 'that the word v clear appears upon the control ystrip in printing complete zero items, see Fig. 15.

Having described my invention, I claim:

-1. In a printing mechanism for calculating.

machines, a type carrier having a clear position and pos1t1ons correspondmgto the numbers 0 to 9,v means for dlfferentially moving said type carrier-in accordance with amounts set, and meansfor adjusting said type carrier into zero or clear posltion, comprising a ting means. and said type carrier, a pin on which said pinion is journalled, and a movable support for said pin, and driving means for moving said -support to impart a .motion of one unit to said type carrier, in an additive orsubtra'ctive sense, the movement of said support by said driving means being under the control ofsaid shifting device.

3. In a printingl mechanism for calculating machines, a type carrier having a clear position and positions corresponding tothe numbers 0 to 9, means for setting said type carrier in accordance withamounts set comprising a rack bar, a pinion geared thereto, and connections-between said pinion and said type carrier, a pin upon which said pinion is journalled, a slide, movable parallel to said rack, upon which said pin is supported, driving means, a coupling controlled by said rack for connecting said slide to said driving means', said vdriving means being adapted, when coupled, to move said slide to impart a motion of one unit to said type carrier.

4. In a printing mechanism as recited in claim 3, a stationary member adapted to be engaged by said coupling in its uncoupled position to lock said slide in one position, said coupling being adapted to positively connect said slide to said driving means in its coupled position.` r.

5. A printing mechanism as recited'in claim 3 in which said'driying means com- .prises a swingingrod, a stat/ionary'member,

said coupling having recesses adapted to engage saidswinging rod and said stationary member 4respectively and alternatively, said ing rod and stationary member with which they cooperate, 'and means for positively holding said coupling member in such position that said swinging rod and stationary member enter their respective recesses with play on each side.

6. In a printing mechanism for calculating machines, type carriers having positions' in sequence corresponding to clear and the numbers 0 to 9, means Afor differentially mov- `ing said type carriers according to amounts set, means for causingthe typeof said type vrecesses being slightly wider than the swingl j in the new number to which the machine has been adjusted, and means for retracting said last`mentioned type carriers by one unit after the printing takes place. 7. A printing mechanism as recited in claim 6 in which the means for advancing the type carriers by one unit comprises shifting members, said shifting members being interconnected in such a manner that each controllsf shifting members of lower o'rder than itse 8. A printing mechanism as recited in claim 6 in which the means for advancing the type carriers by one unit comprises shift ing members, alternate shifting members be ingprovided with a lug overlapping the shifting member of the next lower order and a lug underlapping the shifting member of the next higher order, the intermediate shifting members being without such lugs.

9. vA printing mechanism as recited in claim i in which themeans for advancing/the type carriers by one unit comprises a common shifting member for the three lower orders and individual shifting members for ing interconnected in such a manner that each shifting member in said higher orders controls all shifting members of lower order than'itself, including the three lower orders.

10'. A printing. mechanism as recited in claim 6 in which the means for advancing by orders comprises three pinions in the three J lower orders of said differential moving means, a common shiftable frame upon whic said pinions are mounted, and ymeans controlled by the setting of an amount in any of the three lower orders for shifting said p `frame. 1

11. In a printing mechanism for calculatmachines, t e carriers for a number of quence the po 'tions clear and 0 to 9 inclusive, said type carriers when the machine contains no amount, means according to amounts set, means or imparting a supplementary motion of one unit to the type carriers of the three lowest orders when an amount is entered in any of saidorders, and means operable u n entering an amount mentary motion of one unit to the t riers of said 12. In a printing mechanism for calculatmachines, type or ers -quence eater t.

e positlnsclear and 0 to 9 inclusive, said t carriers being inthe position clear -when t e machine contains no amount,

means for dierentially movingsaid t imparting a supplementary motion of one each higher order, said shifting members bev one unit the type carriers of the three lowers..l

1n orgiers greater .t an 3, each having in seunit to the type carriers ofthe three, lowest i.

orders when an amount is entered, compr1sing a rack bar and pinion for each order, said pinions beingl geared to their respective type carriers, a s iftable frame upon which the pinions of the three lowest yorders are mounted, separate slides upon which the pinany one of said f orders controls the couplings of all -orders i below' it.

13. A printing. mechanism as recited in claim 12 in which the coupling for said frame comprises a bar adapted to be engaged' by the rack of one of said three lowest orders,-lat

eral projections adapted to'be engaged by the other two rack bars of isaid three lowest orders,f,and' a lateral lug adapted to be engaged by the coupling of the slide next above said three lowest ordels.

y 14. A printing deviceaccordin to claim 11 in which the type carriers o the three lowest orders are provided in their clear poword cflear. f l d Thev oreg'oing speci cation signe y at Cologne, Germany, this 04 day of August,

1929. y ERNST BREITLING.

being in the position clear for dilerentially moving said ty e carriers i in any higher order or imparting a supphigher order and orders 'carriers for a number of an 3,. .each havingl inse-1..

sitions with letters which together spell thel carriers according to amounts set, means or 

